What should you know about CO2 laser for surgical scars?

CO2 laser delivers controlled heat to the scar and nearby skin. Fractional treatment creates microscopic treatment columns that can encourage collagen remodelling while leaving untreated skin between them. As healing progresses, a firm or uneven scar may feel more flexible and look more blended. This is different from reopening or excising the scar, and it cannot return the skin to its pre-surgery state.

Treatment should wait until the incision is closed and stable. A scar that is still draining, infected, separating, or rapidly changing needs medical review first. Redness, swelling, peeling, and temporary colour change can follow resurfacing.

Bring the surgical history and tell the clinician about wound problems, raised scars, cold sores, medicines, allergies, and previous laser treatment. Ask whether the scar is mature enough and whether another approach is better for a raised, tethered, or very itchy scar. After treatment, follow dressing and cleansing instructions, avoid friction and picking, shield the area from sunlight, and wait for permission before using retinoids, acids, or scar massage.

Contact the treating clinic for increasing pain, warmth, redness, pus, fever, persistent bleeding, or wound separation. Seek urgent care if swelling spreads quickly, severe pain develops, or breathing or vision is affected. If the scar becomes more raised, tight, itchy, or darker after the healing phase, arrange review before considering further treatment.

Ask whether your incision is fully healed, what scar feature the laser is targeting, which settings and sessions may be considered, how pigment change will be reduced, and when massage, exercise, and normal skincare can resume.